3-O-methylcatechin [ 2-methoxy-5,7,3',4'-tetrahydroxyflavan,3',4',5,7-tetrahydroxy-3-methoxyflavan,3-MTHF,3-O-methylcatechin, (2R-trans)-isomer,meciadanol ] catechin metabolite; RN & N1 from CA Vol 91 Form Index; RN given refers to cpd without isomeric designation